Lm3914 Vu Meter Circuit. Led bar graphs are used often in vu meter circuits in which the led bar graph can be lit up in proportion to the amount of voltage a device is outputting. They can display with 20 leds on stereo or mono with 10 leds for all audio systems.
Firstly the analog input is coming from a mic smartphone. Led bar graphs are used often in vu meter circuits in which the led bar graph can be lit up in proportion to the amount of voltage a device is outputting. Led vu meter using lm3914 we can consider the volume meter as an equalizer which is present in the music systems.
We will be happy when use them.
Also we can easily build and cheap. Lm3914 is a chip which drives 10 led based on linear input voltage value. Lm3914 is an analog controlled led driver ic meaning it can control turn on or off 10 leds by an analog input voltage. Led bar graphs are used often in vu meter circuits in which the led bar graph can be lit up in proportion to the amount of voltage a device is outputting.
